//
// detail/bind_handler.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_DETAIL_BIND_HANDLER_HPP
#define ASIO_DETAIL_BIND_HANDLER_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"
#include "asio/associator.hpp"
#include "asio/detail/handler_alloc_helpers.hpp"
#include "asio/detail/handler_cont_helpers.hpp"
#include "asio/detail/handler_invoke_helpers.hpp"
#include "asio/detail/type_traits.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
    namespace detail {

        template<typename Handler>
        class binder0 {
        public:
            template<typename T>
            binder0(int, ASIO_MOVE_ARG(T) handler)
                    : handler_(ASIO_MOVE_CAST(T)(handler)) {
            }

            binder0(Handler &handler)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)) {
            }

#if defined(ASIO_HAS_MOVE)
            binder0(const binder0& other)
              : handler_(other.handler_)
            {
            }

            binder0(binder0&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)();
            }

            void operator()() const {
                handler_();
            }

//private:
            Handler handler_;
        };

        template<typename Handler>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder0<Handler> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder0<Handler> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler>
        inline bool asio_handler_is_continuation(
                binder0<Handler> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder0<Handler> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder0<Handler> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler>
        inline binder0<typename decay<Handler>::type> bind_handler(
                ASIO_MOVE_ARG(Handler) handler) {
            return binder0<typename decay<Handler>::type>(
                    0, ASIO_MOVE_CAST(Handler)(handler));
        }

        template<typename Handler, typename Arg1>
        class binder1 {
        public:
            template<typename T>
            binder1(int, ASIO_MOVE_ARG(T) handler, const Arg1 &arg1)
                    : handler_(ASIO_MOVE_CAST(T)(handler)),
                      arg1_(arg1) {
            }

            binder1(Handler &handler, const Arg1 &arg1)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)),
                      arg1_(arg1) {
            }

#if defined(ASIO_HAS_MOVE)
            binder1(const binder1& other)
              : handler_(other.handler_),
                arg1_(other.arg1_)
            {
            }

            binder1(binder1&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
                arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                        static_cast<const Arg1 &>(arg1_));
            }

            void operator()() const {
                handler_(arg1_);
            }

//private:
            Handler handler_;
            Arg1 arg1_;
        };

        template<typename Handler, typename Arg1>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder1<Handler, Arg1> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder1<Handler, Arg1> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1>
        inline bool asio_handler_is_continuation(
                binder1<Handler, Arg1> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler, typename Arg1>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder1<Handler, Arg1> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler, typename Arg1>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder1<Handler, Arg1> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1>
        inline binder1<typename decay<Handler>::type, Arg1> bind_handler(
                ASIO_MOVE_ARG(Handler) handler, const Arg1 &arg1) {
            return binder1<typename decay<Handler>::type, Arg1>(0,
                                                                ASIO_MOVE_CAST(Handler)(handler), arg1);
        }

        template<typename Handler, typename Arg1, typename Arg2>
        class binder2 {
        public:
            template<typename T>
            binder2(int, ASIO_MOVE_ARG(T) handler,
                    const Arg1 &arg1, const Arg2 &arg2)
                    : handler_(ASIO_MOVE_CAST(T)(handler)),
                      arg1_(arg1),
                      arg2_(arg2) {
            }

            binder2(Handler &handler, const Arg1 &arg1, const Arg2 &arg2)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)),
                      arg1_(arg1),
                      arg2_(arg2) {
            }

#if defined(ASIO_HAS_MOVE)
            binder2(const binder2& other)
              : handler_(other.handler_),
                arg1_(other.arg1_),
                arg2_(other.arg2_)
            {
            }

            binder2(binder2&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
                arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
                arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                        static_cast<const Arg1 &>(arg1_),
                        static_cast<const Arg2 &>(arg2_));
            }

            void operator()() const {
                handler_(arg1_, arg2_);
            }

//private:
            Handler handler_;
            Arg1 arg1_;
            Arg2 arg2_;
        };

        template<typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder2<Handler, Arg1, Arg2> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder2<Handler, Arg1, Arg2> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2>
        inline bool asio_handler_is_continuation(
                binder2<Handler, Arg1, Arg2> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder2<Handler, Arg1, Arg2> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder2<Handler, Arg1, Arg2> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2>
        inline binder2<typename decay<Handler>::type, Arg1, Arg2> bind_handler(
                ASIO_MOVE_ARG(Handler) handler, const Arg1 &arg1, const Arg2 &arg2) {
            return binder2<typename decay<Handler>::type, Arg1, Arg2>(0,
                                                                      ASIO_MOVE_CAST(Handler)(handler), arg1, arg2);
        }

        template<typename Handler, typename Arg1, typename Arg2, typename Arg3>
        class binder3 {
        public:
            template<typename T>
            binder3(int, ASIO_MOVE_ARG(T) handler, const Arg1 &arg1,
                    const Arg2 &arg2, const Arg3 &arg3)
                    : handler_(ASIO_MOVE_CAST(T)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3) {
            }

            binder3(Handler &handler, const Arg1 &arg1,
                    const Arg2 &arg2, const Arg3 &arg3)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3) {
            }

#if defined(ASIO_HAS_MOVE)
            binder3(const binder3& other)
              : handler_(other.handler_),
                arg1_(other.arg1_),
                arg2_(other.arg2_),
                arg3_(other.arg3_)
            {
            }

            binder3(binder3&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
                arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
                arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
                arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                        static_cast<const Arg1 &>(arg1_),
                        static_cast<const Arg2 &>(arg2_),
                        static_cast<const Arg3 &>(arg3_));
            }

            void operator()() const {
                handler_(arg1_, arg2_, arg3_);
            }

//private:
            Handler handler_;
            Arg1 arg1_;
            Arg2 arg2_;
            Arg3 arg3_;
        };

        template<typename Handler, typename Arg1, typename Arg2, typename Arg3>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder3<Handler, Arg1, Arg2, Arg3> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2, typename Arg3>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder3<Handler, Arg1, Arg2, Arg3> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2, typename Arg3>
        inline bool asio_handler_is_continuation(
                binder3<Handler, Arg1, Arg2, Arg3> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler,
                typename Arg1, typename Arg2, typename Arg3>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder3<Handler, Arg1, Arg2, Arg3> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler,
                typename Arg1, typename Arg2, typename Arg3>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder3<Handler, Arg1, Arg2, Arg3> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2, typename Arg3>
        inline binder3<typename decay<Handler>::type, Arg1, Arg2, Arg3> bind_handler(
                ASIO_MOVE_ARG(Handler) handler, const Arg1 &arg1, const Arg2 &arg2,
                const Arg3 &arg3) {
            return binder3<typename decay<Handler>::type, Arg1, Arg2, Arg3>(0,
                                                                            ASIO_MOVE_CAST(Handler)(handler), arg1,
                                                                            arg2, arg3);
        }

        template<typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        class binder4 {
        public:
            template<typename T>
            binder4(int, ASIO_MOVE_ARG(T) handler, const Arg1 &arg1,
                    const Arg2 &arg2, const Arg3 &arg3, const Arg4 &arg4)
                    : handler_(ASIO_MOVE_CAST(T)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3),
                      arg4_(arg4) {
            }

            binder4(Handler &handler, const Arg1 &arg1,
                    const Arg2 &arg2, const Arg3 &arg3, const Arg4 &arg4)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3),
                      arg4_(arg4) {
            }

#if defined(ASIO_HAS_MOVE)
            binder4(const binder4& other)
              : handler_(other.handler_),
                arg1_(other.arg1_),
                arg2_(other.arg2_),
                arg3_(other.arg3_),
                arg4_(other.arg4_)
            {
            }

            binder4(binder4&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
                arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
                arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
                arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_)),
                arg4_(ASIO_MOVE_CAST(Arg4)(other.arg4_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                        static_cast<const Arg1 &>(arg1_),
                        static_cast<const Arg2 &>(arg2_),
                        static_cast<const Arg3 &>(arg3_),
                        static_cast<const Arg4 &>(arg4_));
            }

            void operator()() const {
                handler_(arg1_, arg2_, arg3_, arg4_);
            }

//private:
            Handler handler_;
            Arg1 arg1_;
            Arg2 arg2_;
            Arg3 arg3_;
            Arg4 arg4_;
        };

        template<typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder4<Handler, Arg1, Arg2, Arg3, Arg4> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder4<Handler, Arg1, Arg2, Arg3, Arg4> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline bool asio_handler_is_continuation(
                binder4<Handler, Arg1, Arg2, Arg3, Arg4> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder4<Handler, Arg1, Arg2, Arg3, Arg4> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder4<Handler, Arg1, Arg2, Arg3, Arg4> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4>
        inline binder4<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4>
        bind_handler(ASIO_MOVE_ARG(Handler) handler, const Arg1 &arg1,
                     const Arg2 &arg2, const Arg3 &arg3, const Arg4 &arg4) {
            return binder4<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4>(0,
                                                                                  ASIO_MOVE_CAST(Handler)(handler),
                                                                                  arg1, arg2, arg3, arg4);
        }

        template<typename Handler, typename Arg1, typename Arg2,
                typename Arg3, typename Arg4, typename Arg5>
        class binder5 {
        public:
            template<typename T>
            binder5(int, ASIO_MOVE_ARG(T) handler, const Arg1 &arg1,
                    const Arg2 &arg2, const Arg3 &arg3, const Arg4 &arg4, const Arg5 &arg5)
                    : handler_(ASIO_MOVE_CAST(T)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3),
                      arg4_(arg4),
                      arg5_(arg5) {
            }

            binder5(Handler &handler, const Arg1 &arg1, const Arg2 &arg2,
                    const Arg3 &arg3, const Arg4 &arg4, const Arg5 &arg5)
                    : handler_(ASIO_MOVE_CAST(Handler)(handler)),
                      arg1_(arg1),
                      arg2_(arg2),
                      arg3_(arg3),
                      arg4_(arg4),
                      arg5_(arg5) {
            }

#if defined(ASIO_HAS_MOVE)
            binder5(const binder5& other)
              : handler_(other.handler_),
                arg1_(other.arg1_),
                arg2_(other.arg2_),
                arg3_(other.arg3_),
                arg4_(other.arg4_),
                arg5_(other.arg5_)
            {
            }

            binder5(binder5&& other)
              : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
                arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
                arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_)),
                arg3_(ASIO_MOVE_CAST(Arg3)(other.arg3_)),
                arg4_(ASIO_MOVE_CAST(Arg4)(other.arg4_)),
                arg5_(ASIO_MOVE_CAST(Arg5)(other.arg5_))
            {
            }
#endif // defined(ASIO_HAS_MOVE)

            void operator()() {
                ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                        static_cast<const Arg1 &>(arg1_),
                        static_cast<const Arg2 &>(arg2_),
                        static_cast<const Arg3 &>(arg3_),
                        static_cast<const Arg4 &>(arg4_),
                        static_cast<const Arg5 &>(arg5_));
            }

            void operator()() const {
                handler_(arg1_, arg2_, arg3_, arg4_, arg5_);
            }

//private:
            Handler handler_;
            Arg1 arg1_;
            Arg2 arg2_;
            Arg3 arg3_;
            Arg4 arg4_;
            Arg5 arg5_;
        };

        template<typename Handler, typename Arg1, typename Arg2,
                typename Arg3, typename Arg4, typename Arg5>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
                              binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> *this_handler) {
#if defined(ASIO_NO_DEPRECATED)
            asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
            return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
            return asio_handler_alloc_helpers::allocate(
                    size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2,
                typename Arg3, typename Arg4, typename Arg5>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void *pointer, std::size_t size,
                                binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> *this_handler) {
            asio_handler_alloc_helpers::deallocate(
                    pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2,
                typename Arg3, typename Arg4, typename Arg5>
        inline bool asio_handler_is_continuation(
                binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> *this_handler) {
            return asio_handler_cont_helpers::is_continuation(
                    this_handler->handler_);
        }

        template<typename Function, typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4, typename Arg5>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(Function &function,
                            binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Function, typename Handler, typename Arg1,
                typename Arg2, typename Arg3, typename Arg4, typename Arg5>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(const Function &function,
                            binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> *this_handler) {
            asio_handler_invoke_helpers::invoke(
                    function, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
            return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template<typename Handler, typename Arg1, typename Arg2,
                typename Arg3, typename Arg4, typename Arg5>
        inline binder5<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4, Arg5>
        bind_handler(ASIO_MOVE_ARG(Handler) handler, const Arg1 &arg1,
                     const Arg2 &arg2, const Arg3 &arg3, const Arg4 &arg4, const Arg5 &arg5) {
            return binder5<typename decay<Handler>::type, Arg1, Arg2, Arg3, Arg4, Arg5>(0,
                                                                                        ASIO_MOVE_CAST(Handler)(
                                                                                                handler), arg1, arg2,
                                                                                        arg3, arg4, arg5);
        }

#if defined(ASIO_HAS_MOVE)

        template <typename Handler, typename Arg1>
        class move_binder1
        {
        public:
          move_binder1(int, ASIO_MOVE_ARG(Handler) handler,
              ASIO_MOVE_ARG(Arg1) arg1)
            : handler_(ASIO_MOVE_CAST(Handler)(handler)),
              arg1_(ASIO_MOVE_CAST(Arg1)(arg1))
          {
          }

          move_binder1(move_binder1&& other)
            : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
              arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_))
          {
          }

          void operator()()
          {
            ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                ASIO_MOVE_CAST(Arg1)(arg1_));
          }

        //private:
          Handler handler_;
          Arg1 arg1_;
        };

        template <typename Handler, typename Arg1>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
            move_binder1<Handler, Arg1>* this_handler)
        {
#if defined(ASIO_NO_DEPRECATED)
          asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
          return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
          return asio_handler_alloc_helpers::allocate(
              size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template <typename Handler, typename Arg1>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void* pointer, std::size_t size,
            move_binder1<Handler, Arg1>* this_handler)
        {
          asio_handler_alloc_helpers::deallocate(
              pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
          return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template <typename Handler, typename Arg1>
        inline bool asio_handler_is_continuation(
            move_binder1<Handler, Arg1>* this_handler)
        {
          return asio_handler_cont_helpers::is_continuation(
              this_handler->handler_);
        }

        template <typename Function, typename Handler, typename Arg1>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(ASIO_MOVE_ARG(Function) function,
            move_binder1<Handler, Arg1>* this_handler)
        {
          asio_handler_invoke_helpers::invoke(
              ASIO_MOVE_CAST(Function)(function), this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
          return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template <typename Handler, typename Arg1, typename Arg2>
        class move_binder2
        {
        public:
          move_binder2(int, ASIO_MOVE_ARG(Handler) handler,
              const Arg1& arg1, ASIO_MOVE_ARG(Arg2) arg2)
            : handler_(ASIO_MOVE_CAST(Handler)(handler)),
              arg1_(arg1),
              arg2_(ASIO_MOVE_CAST(Arg2)(arg2))
          {
          }

          move_binder2(move_binder2&& other)
            : handler_(ASIO_MOVE_CAST(Handler)(other.handler_)),
              arg1_(ASIO_MOVE_CAST(Arg1)(other.arg1_)),
              arg2_(ASIO_MOVE_CAST(Arg2)(other.arg2_))
          {
          }

          void operator()()
          {
            ASIO_MOVE_OR_LVALUE(Handler)(handler_)(
                static_cast<const Arg1&>(arg1_),
                ASIO_MOVE_CAST(Arg2)(arg2_));
          }

        //private:
          Handler handler_;
          Arg1 arg1_;
          Arg2 arg2_;
        };

        template <typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_allocate_is_deprecated
        asio_handler_allocate(std::size_t size,
            move_binder2<Handler, Arg1, Arg2>* this_handler)
        {
#if defined(ASIO_NO_DEPRECATED)
          asio_handler_alloc_helpers::allocate(size, this_handler->handler_);
          return asio_handler_allocate_is_no_longer_used();
#else // defined(ASIO_NO_DEPRECATED)
          return asio_handler_alloc_helpers::allocate(
              size, this_handler->handler_);
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template <typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_deallocate_is_deprecated
        asio_handler_deallocate(void* pointer, std::size_t size,
            move_binder2<Handler, Arg1, Arg2>* this_handler)
        {
          asio_handler_alloc_helpers::deallocate(
              pointer, size, this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
          return asio_handler_deallocate_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

        template <typename Handler, typename Arg1, typename Arg2>
        inline bool asio_handler_is_continuation(
            move_binder2<Handler, Arg1, Arg2>* this_handler)
        {
          return asio_handler_cont_helpers::is_continuation(
              this_handler->handler_);
        }

        template <typename Function, typename Handler, typename Arg1, typename Arg2>
        inline asio_handler_invoke_is_deprecated
        asio_handler_invoke(ASIO_MOVE_ARG(Function) function,
            move_binder2<Handler, Arg1, Arg2>* this_handler)
        {
          asio_handler_invoke_helpers::invoke(
              ASIO_MOVE_CAST(Function)(function), this_handler->handler_);
#if defined(ASIO_NO_DEPRECATED)
          return asio_handler_invoke_is_no_longer_used();
#endif // defined(ASIO_NO_DEPRECATED)
        }

#endif // defined(ASIO_HAS_MOVE)

    } // namespace detail

    template<template<typename, typename> class Associator,
            typename Handler, typename DefaultCandidate>
    struct associator<Associator,
            detail::binder0<Handler>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder0<Handler> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

    template<template<typename, typename> class Associator,
            typename Handler, typename Arg1, typename DefaultCandidate>
    struct associator<Associator,
            detail::binder1<Handler, Arg1>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder1<Handler, Arg1> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

    template<template<typename, typename> class Associator,
            typename Handler, typename Arg1, typename Arg2,
            typename DefaultCandidate>
    struct associator<Associator,
            detail::binder2<Handler, Arg1, Arg2>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder2<Handler, Arg1, Arg2> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

    template<template<typename, typename> class Associator,
            typename Handler, typename Arg1, typename Arg2, typename Arg3,
            typename DefaultCandidate>
    struct associator<Associator,
            detail::binder3<Handler, Arg1, Arg2, Arg3>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder3<Handler, Arg1, Arg2, Arg3> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

    template<template<typename, typename> class Associator,
            typename Handler, typename Arg1, typename Arg2, typename Arg3,
            typename Arg4, typename DefaultCandidate>
    struct associator<Associator,
            detail::binder4<Handler, Arg1, Arg2, Arg3, Arg4>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder4<Handler, Arg1, Arg2, Arg3, Arg4> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

    template<template<typename, typename> class Associator,
            typename Handler, typename Arg1, typename Arg2, typename Arg3,
            typename Arg4, typename Arg5, typename DefaultCandidate>
    struct associator<Associator,
            detail::binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5>, DefaultCandidate>
            : Associator<Handler, DefaultCandidate> {
        static typename Associator<Handler, DefaultCandidate>::type get(
                const detail::binder5<Handler, Arg1, Arg2, Arg3, Arg4, Arg5> &h,
                const DefaultCandidate &c = DefaultCandidate())

        ASIO_NOEXCEPT
        {
            return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
        }
    };

#if defined(ASIO_HAS_MOVE)

    template <template <typename, typename> class Associator,
        typename Handler, typename Arg1, typename DefaultCandidate>
    struct associator<Associator,
        detail::move_binder1<Handler, Arg1>, DefaultCandidate>
      : Associator<Handler, DefaultCandidate>
    {
      static typename Associator<Handler, DefaultCandidate>::type get(
          const detail::move_binder1<Handler, Arg1>& h,
          const DefaultCandidate& c = DefaultCandidate()) ASIO_NOEXCEPT
      {
        return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
      }
    };

    template <template <typename, typename> class Associator,
        typename Handler, typename Arg1, typename Arg2,
        typename DefaultCandidate>
    struct associator<Associator,
        detail::move_binder2<Handler, Arg1, Arg2>, DefaultCandidate>
      : Associator<Handler, DefaultCandidate>
    {
      static typename Associator<Handler, DefaultCandidate>::type get(
          const detail::move_binder2<Handler, Arg1, Arg2>& h,
          const DefaultCandidate& c = DefaultCandidate()) ASIO_NOEXCEPT
      {
        return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
      }
    };

#endif // defined(ASIO_HAS_MOVE)

} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_DETAIL_BIND_HANDLER_HPP
